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Massachusetts U.S. Senator Scott Brown, a Republican, is going on the air with his first television ad of the campaign, six months before the election.

The new 30-second ad is a positive introductory spot, stressing Brown’s independent streak. It will begin airing statewide Wednesday in the Boston, Springfield, Providence and Albany markets and on statewide cable.

The ad comes days after Brown’s Democratic challenger Elizabeth Warren released her own ad featuring President Obama. While figures are not available for the size of the Brown ad buy, the early advertising is indicative of a race that is expected to be the most expensive in the country.

The ad begins with a shot of Brown on the night he was elected in 2010, stating, “Tonight, the independent majority has delivered a great victory.” It segues into pictures of Brown meeting with children and stating, “My whole life has been about beating the odds.” The ad continues with a clip of 60 Minutes’ newscaster Leslie Stahl calling Brown “unpredictably independent and beholden to no one.”

The only reference to policy is Brown’s concluding message: “We have more work to do on getting this economy moving again. Working together, we can restore the American Dream for all of us.”

As Brown faces a tough reelection fight in a heavily Democratic state, he has made his independence from his party a key platform of his campaign.